In the past two decades, the field of cavity opto-mechanics has been very successful at observing and controlling the quantum states of macroscopic objects. One of the main challenges for quantum control and quantum sensing, however, is Brownian motion and thermal decoherence. Therefore, in these “quantum experiments”, expensive cryogenic systems had to be used to suppress the thermal noise. Achieving the same level of quantum control at room temperature will be a major technological breakthrough that can bring the quantum technology to every lab around the world. Such a goal, once considered impossible, is now within reach.
In this talk, I will introduce a novel platform for quantum information processing (QIP) at room temperature. The system is based on a high quality opto-mechanical system – a miniaturized LIGO on a chip. I will start by reviewing the challenges of quantum control in the face of thermal decoherence and will demonstrate how ultra-high quality (UHQ) mechanical resonators could provide an alternative path for QIP at room temperature. Next, we review our recent progress in making UHQ mechanical resonators and their integration with photonic circuits to achieve the full quantum control at room temperature. We will then briefly review the applications of these systems for QIP such as long-term quantum memories and quantum transducers. Finally, we will step outside of the quantum world and review the applications of these ultra-sensitive chip-scale opto-mechanical systems for sensing technologies such as seismic and acceleration sensors.
Dr. Amir H. Ghadimi is currently a post-doctoral research scientist at the Swiss Center for Micro and nano-technology (CSEM). He obtained his PhD. in electrical engineering in 2018 from the Swiss Federal Institute of Technology (EPFL). His PhD research focuses on quantum optomechanics, precision sensing and applications of high Q optical and mechanical cavities. His Ph.D. work has been highlighted by several high impact publications such Science (2018), Nature (2015) and PRX (2016). He is the recipient of CSEM postdoc fellowship award (2018), Swiss Nanotechnology best PhD award (2018) and European frequency and time forum (EFTF) best paper award (2018).
Host: Marc Baldo